Ferrocenediyl-Bridged Triiron Complexes†

Ferrocenediyl-Bridged Triiron Complexes†
复制标题

DOI:
10.1021/om0008528
复制
发表时间:
2001-05
期刊:
影响因子:
2.8
通讯作者:
Lung-Shiang Luh;Y. Wen;G. Vankó;Ling‐Kang Liu
Lung-Shiang Luh;Y. Wen;G. Vankó;Ling‐Kang Liu
中科院分区:
化学2区
文献类型:
--
作者:
Lung-Shiang Luh;Y. Wen;G. Vankó;Ling‐Kang Liu

文献摘要

被引文献

相似文献

2 当量 CpFe(CO)2I 和 1,1'-二锂二茂铁在 2 当量 PPh3 存在下的反应是 CpFe(CO)2I 和 (η5-C5H4Li)Fe(C5H4PPh2) 反应的分子间形式。在三组分过程中,PPh3 取代 CpFe(CO)2I 上的碘化物比 Fe 中心或 CpFe(CO)2I 的 CO 配体处的亲核 Fc 加成快得多。该一锅反应通过 [CpFe(CO)2PPh3+] 进行,并以 50% 的产率生成 CpFe(CO)(PPh3)[μ,C:η5-C(O)C5H4]Fe[μ,η5:η4-5-exo-(1'-C5H4)C5H5]Fe(CO)2(PPh3) (4),其中 1,1'-二锂二茂铁参与两次在亲核 Fc 加成中:在 Cp 环和 [CpFe(CO)2PPh3+] 的 CO 配体上。配合物 4 是一种二茂铁桥联三铁配合物,具有三个不同的 Fe 中心:茂金属 Fe(II)、方锥五配位 Fe(0) 和半夹心酰基 Fe(II)。研究发现,在第二次 Fc 添加中,从 (η5-C5H4Li)Fe[μ,η5:C-C5H4C(O)]FeCp(CO)(PPh3) (9) 到 4 的路径正常进行,但从 9 t...
The reaction of 2 equiv of CpFe(CO)2I and 1,1‘-dilithioferrocene in the presence of 2 equiv of PPh3 is an intermolecular version of the reaction of CpFe(CO)2I and (η5-C5H4Li)Fe(C5H4PPh2). In the three-component procedure, the PPh3 substitution for iodide on CpFe(CO)2I is much faster than the nucleophilic Fc-addition at the Fe-center or at a CO ligand of CpFe(CO)2I. This one-pot reaction proceeds through [CpFe(CO)2PPh3+] and yields CpFe(CO)(PPh3)[μ,C:η5-C(O)C5H4]Fe[μ,η5:η4-5-exo-(1‘-C5H4)C5H5]Fe(CO)2(PPh3) (4) in 50% yield, with the 1,1‘-dilithioferrocene participating twice in the nucleophilic Fc-additions: at the Cp-ring and at a CO ligand of [CpFe(CO)2PPh3+]. Complex 4 is a ferrocenediyl-bridged tri-Fe complex with three different Fe-centers: a metallocene Fe(II), a square-pyramidal pentacoordinate Fe(0), and a half-sandwich acyl-Fe(II). It has been found that, in the second Fc-additions, the pathway from (η5-C5H4Li)Fe[μ,η5:C-C5H4C(O)]FeCp(CO)(PPh3) (9) to 4 proceeds normally, but the pathway from 9 t...